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Jay
Jay, Certified Infiniti Technician
Category: Infiniti
Satisfied Customers: 19058
Experience:  20+years, Nissan and Infiniti experience and currently now working for a Infiniti Dealer
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Crank no start security light stays on solid and rad fans

Customer Question

Crank no start security light stays on solid and rad fans come on while cranking
JA: Does the light flash, blink or stay solid? Have you tried to reset the security system?
Customer: Stays solid
JA: What is the model/year of your Infiniti?
Customer: 05 g35 coupe
JA: Are you fixing your G35 Coupe yourself? What have you tried so far?
Customer: Yes
JA: Anything else you want the mechanic to know before I connect you?
Customer: It was running good b pulled in drive way shut it off went to move it and no start
Submitted: 3 months ago.
Category: Infiniti
Expert:  Jay replied 3 months ago.

Hello my name is ***** ***** thank you for your question.

Does the radiator fans come on when you turn the ignition to the ON position?

Customer: replied 3 months ago.
they do
Expert:  Jay replied 3 months ago.

The fans come on when there is a communication issue with a major control unit. Can you communicate with the Ecm?

Customer: replied 3 months ago.
No
Expert:  Jay replied 3 months ago.

You have a scanner?

Customer: replied 3 months ago.
No we dont
Expert:  Jay replied 3 months ago.

This most commonly is a IPDM or Ecm failure causing this issue. The only way to find out is to hook the car up to a scanner I am afraid. It's better not to guess. I would pay to have this checked so the correct parts are replaced.

Do you have any more questions on this?

Customer: replied 3 months ago.
My security light stays on solid
Expert:  Jay replied 3 months ago.

Yeah, which could be a Ecm or a BCM issue. Especially with the fans coming on. That means there is a control unit communication issue. Most commonly due to control unit failure.